Target Information
TARGET_NAME MERCURY
PRIMARY_BODY_NAME SUN
TARGET_TYPE PLANET
TARGET_DESCRIPTION
TARGET PARAMETERS
    =================
 
    A_AXIS_RADIUS                   : 2439.70000
        TARGET_PARAMETER_UNCERTAINTY    : 1.
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    B_AXIS_RADIUS                   : 2439.70000
    	TARGET_PARAMETER_UNCERTAINTY    : 1.
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    BOND_ALBEDO                     : UNK
 
    C_AXIS_RADIUS                   : 2439.70000
    	TARGET_PARAMETER_UNCERTAINTY    : 1.
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    FLATTENING                      : 0.000000
    	TARGET_PARAMETER_UNCERTAINTY    : 0.0005
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    MAGNETIC_MOMENT                 : 5500000000000.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UPPER LIMIT
    	TARGET_PARAMETER_EPOCH          : 1987
        DATA_SOURCE_ID                  : MAGMOMENT-PLANET
 
    MASS                            : 330220000000000000000000.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989
        DATA_SOURCE_ID                  : PHYSICAL-PLANET
 
    MASS_DENSITY                    : 5.430000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989
        DATA_SOURCE_ID                  : PHYSICAL-PLANET
 
    EQUATORIAL_RADIUS               : 2439.700000
    	TARGET_PARAMETER_UNCERTAINTY    : 1.
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    MEAN_RADIUS                     : 2439.700000
    	TARGET_PARAMETER_UNCERTAINTY    : 1.
    	DATA_SOURCE_ID                  : RADIUS-PLANET
 
    SURFACE_GRAVITY                 : 3.700000
        TARGET_PARAMETER_UNCERTAINTY    : UNK
        TARGET_PARAMETER_EPOCH          : 1989
        DATA_SOURCE_ID                  : SURFGRAV-PLANET
 
    REVOLUTION_PERIOD               : 87.970000
        TARGET_PARAMETER_UNCERTAINTY    : UNK
        TARGET_PARAMETER_EPOCH          : 1989-02-03
        DATA_SOURCE_ID                  : REVPER-PLANET
 
    POLE_RIGHT_ASCENSION            : 291.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989
    	DATA_SOURCE_ID                  : ROTATION-PLANET
 
    POLE_DECLINATION                : 61.400000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989
    	DATA_SOURCE_ID                  : ROTATION-PLANET
 
    SIDEREAL_ROTATION_PERIOD        : 58.600000
        TARGET_PARAMETER_UNCERTAINTY    : UNK
        DATA_SOURCE_ID                  : PHYSICAL-PLANET
 
    MEAN_SOLAR_DAY                  : 175.900000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	DATA_SOURCE_ID                  : MEANSOLARDAY-PLANET
 
    OBLIQUITY                       : 0.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	DATA_SOURCE_ID                  : PHYSICAL-PLANET
 
    ORBITAL_ECCENTRICITY            : 0.200000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989-02-03
    	DATA_SOURCE_ID                  : ELEMENTS-PLANET
 
    ORBITAL_INCLINATION             : 7.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989-02-03
    	DATA_SOURCE_ID                  : ELEMENTS-PLANET
 
    ORBITAL_SEMIMAJOR_AXIS          : 57909036.000000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989-02-03
    	DATA_SOURCE_ID                  : ORBSEMIMAJAX-PLANET
 
    ASCENDING_NODE_LONGITUDE        : 48.300000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989-02-03
    	DATA_SOURCE_ID                  : ELEMENTS-PLANET
 
    PERIAPSIS_ARGUMENT_ANGLE        : 29.100000
    	TARGET_PARAMETER_UNCERTAINTY    : UNK
    	TARGET_PARAMETER_EPOCH          : 1989-02-03
    	DATA_SOURCE_ID                  : PERIARGANG-PLANET
 
 
    Data Source Descriptions
    ========================
 
    ELEMENTS-PLANET
   	The 1989 Astronomical Almanac, page E3.
 
    MAGMOMENT-PLANET
   	C.T. RUSSELL, CH. 5 IN GEOMAGNETISM, VOL. 2 (ACADEMIC PRESS)
 
    MEANSOLARDAY-PLANET
   	Derived from three other target constants catalog elements:
   	REVOLUTION_PERIOD (RP), SIDEREAL_ROTATION_PERIOD (SRP), and
     	ROTATION_DIRECTION_TYPE (RDT)  as follows:
    	If RDT = PROGRADE, then MSD = (RP * SRP)/(RP - SRP).
    	If RDT = RETROGRADE, then MSD = (RP * SRP)/(RP + SRP).
 
    ORBSEMIMAJAX-PLANET
  	Derived from data from The 1989 Astronomical Almanac,
   	converting Mean Distance on page E3 to km using the value
   	for Unit Distance found on page K6.
 
    PERIARGANG-PLANET
   	Derived from data from The 1989 Astronomical Almanac as
    	LAN-LP, where LAN is the Ascending Node Longitude and LP is
   	the Longitude of Perihelion, both from page E3.
 
    PHYSICAL-PLANET
   	The 1989 Astronomical Almanac, page E88.
   	The 1989 Astronomical Almanac, page K6.
 
    RADIUS-PLANET
   	Taken or derived from REPORT OF THE IAU WORKING GROUP ON
   	CARTOGRAPHIC COORDINATES AND ROTATIONAL ELEMENTS OF THE
   	PLANETS AND SATELLITES, 1988 as follows:
   	Given Mean Radius (MR), Equatorial Radius (ER), and Polar
   	Radius (PR), then this catalog defines the following:
          A_AXIS_RADIUS        = ER
          B_AXIS_RADIUS        = ER
          C_AXIS_RADIUS        = ER
          FLATTENING           = (ER - PR)/ER
 
    REVPER-PLANET
   	Derived from data from The 1989 Astronomical Almanac as
   	360/n where n is the Daily Motion from page E3.
 
    ROTATION-PLANET
   	The 1989 Astronomical Almanac, page E87.
   	The Astronomical Almanac, 1989, page C3.
 
    SURFGRAV-PLANET
   	Derived from data in THE 1989 ASTRONOMICAL ALMANAC and the
   	1988 REPORT OF THE IAU WORKING GROUP ON CARTOGRAPHIC
   	COORDINATES as (G * MASS)/(MR * MR) where MR is MEAN RADIUS
   	from this catalog, MASS comes from page E88, and the
   	gravitational constant, G, comes from page K6.
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